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8 September, 09:08

a 2.0 L sample of gas at 640 mmhg is allowed to expand into a 8.0l container at a constant temperature what is the new pressure

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  1. 8 September, 10:33
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    160mmHg

    Explanation:

    V1 = 2.0L

    P1 = 640mmHg

    V2 = 8.0L

    P2 = ?

    This question requires the use of Boyle's law which states that the volume of a fixed mass of gas is inversely proportional to its pressure provided that temperature remains constant.

    Mathematically,

    V = k / P, k = PV

    P1 * V1 = P2 * V2 = P3 * V3 = ... Pn * Vn

    P1 * V1 = P2 * V2

    Solve for P2

    P2 = (P1 * V1) / V2

    P2 = (640 * 2.0) / 8.0

    P2 = 160mmHg

    The final pressure of the gas is 160mmHg
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